This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx

David Nutt explains how through decades of education and training the brain constrains the contents of the mind by limiting its activity and directions.And then he will show how psychedelic drugs can break open these limitations to allow new ways of thinking that can help people overcome problems such as depression – and argue that the UN regulations controlling these drugs should be eased so much more therapeutic research can be conducted with these and other 'illegal' drugs to benefit humanity."

David Nutt is a psychiatrist in the Division of Brain Science, Department of Medicine, at the Hammersmith Hospital, Imperial College London.